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[DOC File]OCR Document
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About 95% of all values fall within 2 standard deviations of the mean. About 99.7% of all values fall within 3 standard deviations of the mean. Estimation of Standard Deviation: Range Rule of Thumb. For interpreting a known value of the standard deviation s, find rough estimates of the minimum and maximum “usual” sample values by using: #32 ...
standard deviation for grouped data

[DOC File]Chapter 3:
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Standard Deviation . OR Standard deviation is the measure of variation that is generally the most important & useful. Standard deviation is a measure of how much the data values deviate away from the mean. The value of the standard deviation (s) is usually positive. It is zero only when all of the data values are the same number. (It is never ...
range variance standard deviation calculator

[DOC File]CALCULATING STANDARD DEVIATION WORKSHEET
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Sep 26, 2015 · Find the standard deviation for the number of baskets scored by the team for the ten games: 8, 4, 6, 6, 7, 7, 9, 4, 8, 5. Follow the steps below to calculate the standard deviation. Step 1: Average the scores in the Score column of the table below in order from the smallest to the largest.
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[DOC File]Standard deviation - 物理學系
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The standard deviation allows us to recognize that the average for the city with the wider variation, and thus a higher standard deviation, will not offer as reliable a prediction of temperature as the city with the smaller variation and lower standard deviation. 3.1.2 Sports. Another way …
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[DOC File]BENEDICTINE UNIVERSITY
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Deviation--difference between a data item and the mean. The sum of the deviations in any data set is always equal to zero. Standard Deviation--square root of the variance. Range--difference between the highest and lowest value in a data set. Coefficient of Variation—measures relative dispersion—CV = ssd / x-bar (or est. / )
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[DOC File]AP® Statistics
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Activity: Using the TI-83 graphing calculator Chapter 3 – Averages and Variation – 2 weeks Measures of Central Tendency (Mean, Median, Mode) Measures of Variation (Standard Deviation, Variation, Range) Mean & Standard Deviation of Grouped Data. Percentiles & Box-and-Whisker Plots I. E Exploring categorical data
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[DOC File]Topic 15:
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Use your calculator to determine the proportion of the standard normal curve that falls within one standard deviation of the mean. Repeat part a) for two standard deviations. Repeat part a) for three standard deviations. Determine the z-score such that the area under a normal curve between it and its negative is 0.5000.
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[DOC File]Measures of Variation:
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Range = largest value – smallest value. Ex. 45, 72, 88, 91, 27, 11, 99, 66, & 10 Range = 99 – 10 = 89. Look at the example on page 121 to see how the range can sometimes be deceiving. Standard Deviation – measurement that will give you a better understanding of how …
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[DOCX File]Measures of Variation - Santa Rosa Junior College
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Your calculator can supply you with the standard deviation of a data set with no problem, but we’re going to build up its definition and calculation in what is called the table method. We’ve already started the table, which is the list of x values. Then we must find the mean of the data set, which we did in the last lecture. It’s 71.6 inches.
standard deviation for grouped data

[DOCX File]CALCULATING STANDARD DEVIATION WORKSHEET
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The standard deviation is calculated to find the average distance from the mean. Practice Problem #1: Calculate the standard deviation of the following test data by hand. Use the chart below to record the steps. Test Scores: 22, 99, 102, 33, 57, 75, 100, 81, 62, 29. Mean:_ _____
range variance standard deviation calculator

Range variation standard deviation calculator